How many calories is that

MooseJam

I'm doing 40 mins a day on an exercise bike at the moment, it doesn't have a reading to tell you how many calories you have burnt but it has a watt reading and I keep this at about 100 watts for 40 mins, could anyone tell me how many calories that is ?, thanks

BossArky

Factoring up a few recent cycles I get the following approximations, depending on intensity.

my log wrote:

Bike 18.8 km (45:00, ~450 cals) --> 400 cals for 40 mins (moderate-ish)

Bike 8 km (16:45, ~120 cals I think) --> 280 cals for 40 mins (slow-ish)

EileenG

Go by yourself. If you can chat while doing that 40 minutes, then reckon around 400 cals an hour. If you are puffing and sweating, but can just about sing or hold a conversation, then 600 an hour. If you are going full belt, "drive it like you stole it", then 800-1000 cals an hour.

tunney

100 Watts, unless you're 40kg, is generally less than active recovery on a bike, so I'd say very very little calories burnt.

MooseJam

whats active recovery ? maybe I miss read the readout, I was going at a reasonably fast pace for the 40 minutes so I'd be very surprised if I burnt very very few calories, the distance covered was 13.5 kilometers